<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>sessionStrorage</title>
</head>
<body>
    <h2>localStrorage</h2>
    <button onclick="saveData()">点我保存一个数据</button>
    <button onclick="readData()">点我读取一个数据</button>
    <button onclick="deleteData()">点我删除一个数据</button>
    <button onclick="deleteAllData()">点我清空一个数据</button>
</body>
<script type="text/javascript">
    let p = {name:'张三',age:18}
    function saveData(){
        sessionStorage.setItem('msg','hello')
        sessionStorage.setItem('msg2',666)
        sessionStorage.setItem('person',JSON.stringify(p))

    }
    function readData(){
        console.log(sessionStorage.getItem('msg'));
        console.log(sessionStorage.getItem('msg2'));

        const result = sessionStorage.getItem('person')
        console.log(JSON.parse(result))
    }
    function deleteData(){
        sessionStorage.removeItem('msg2')
    }
    function deleteAllData(){
        sessionStorage.clear()
    }
</script>
</html>